/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:01:14,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:01:15,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:01:15,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:01:15,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:01:15,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:01:15,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:01:15,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:01:15,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:01:15,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:01:15,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:01:15,104 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:01:15,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:01:15,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:01:15,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:01:15,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:01:15,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:01:15,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:01:15,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:01:15,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:01:15,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:01:15,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:01:15,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:01:15,109 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:01:15,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:01:15,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:01:15,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:01:15,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:01:15,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:01:15,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:01:15,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:01:15,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:01:15,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:01:15,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:01:15,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:01:15,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:01:15,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:01:15,386 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:01:15,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-11-17 12:01:16,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:01:16,807 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:01:16,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-11-17 12:01:16,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab841d76/ccf0903b268546a49c05a8d358e9600c/FLAG94179cdd5 [2023-11-17 12:01:16,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab841d76/ccf0903b268546a49c05a8d358e9600c [2023-11-17 12:01:16,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:01:16,835 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:01:16,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:01:16,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:01:16,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:01:16,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:01:16" (1/1) ... [2023-11-17 12:01:16,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664ad5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:16, skipping insertion in model container [2023-11-17 12:01:16,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:01:16" (1/1) ... [2023-11-17 12:01:16,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:01:17,027 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-17 12:01:17,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:01:17,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:01:17,070 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-17 12:01:17,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:01:17,093 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:01:17,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17 WrapperNode [2023-11-17 12:01:17,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:01:17,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:01:17,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:01:17,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:01:17,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,138 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 196 [2023-11-17 12:01:17,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:01:17,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:01:17,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:01:17,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:01:17,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:01:17,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:01:17,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:01:17,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:01:17,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (1/1) ... [2023-11-17 12:01:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:01:17,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:17,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:01:17,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:01:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:01:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 12:01:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:01:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:01:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:01:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:01:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:01:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:01:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:01:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:01:17,261 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:01:17,405 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:01:17,407 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:01:17,804 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:01:18,205 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:01:18,205 INFO L307 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-17 12:01:18,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:01:18 BoogieIcfgContainer [2023-11-17 12:01:18,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:01:18,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:01:18,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:01:18,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:01:18,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:01:16" (1/3) ... [2023-11-17 12:01:18,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d075b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:01:18, skipping insertion in model container [2023-11-17 12:01:18,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:01:17" (2/3) ... [2023-11-17 12:01:18,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d075b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:01:18, skipping insertion in model container [2023-11-17 12:01:18,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:01:18" (3/3) ... [2023-11-17 12:01:18,216 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-17 12:01:18,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:01:18,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:01:18,234 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:01:18,276 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 12:01:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 72 flow [2023-11-17 12:01:18,335 INFO L124 PetriNetUnfolderBase]: 7/27 cut-off events. [2023-11-17 12:01:18,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:01:18,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 7/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2023-11-17 12:01:18,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 72 flow [2023-11-17 12:01:18,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 26 transitions, 64 flow [2023-11-17 12:01:18,350 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:01:18,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 26 transitions, 64 flow [2023-11-17 12:01:18,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 26 transitions, 64 flow [2023-11-17 12:01:18,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 26 transitions, 64 flow [2023-11-17 12:01:18,387 INFO L124 PetriNetUnfolderBase]: 7/26 cut-off events. [2023-11-17 12:01:18,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:01:18,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 7/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2023-11-17 12:01:18,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 78 [2023-11-17 12:01:20,748 INFO L134 LiptonReduction]: Checked pairs total: 76 [2023-11-17 12:01:20,748 INFO L136 LiptonReduction]: Total number of compositions: 1 [2023-11-17 12:01:20,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:01:20,777 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e6402d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:01:20,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 12:01:20,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:01:20,785 INFO L124 PetriNetUnfolderBase]: 7/24 cut-off events. [2023-11-17 12:01:20,786 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:01:20,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:20,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:20,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:20,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1565184576, now seen corresponding path program 1 times [2023-11-17 12:01:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:20,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035159847] [2023-11-17 12:01:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:20,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796650261] [2023-11-17 12:01:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:20,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:20,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:01:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:21,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 12:01:21,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:21,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035159847] [2023-11-17 12:01:21,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796650261] [2023-11-17 12:01:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796650261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:01:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177345598] [2023-11-17 12:01:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:21,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:21,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:21,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:21,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:21,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:21,241 INFO L124 PetriNetUnfolderBase]: 123/210 cut-off events. [2023-11-17 12:01:21,241 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 12:01:21,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 210 events. 123/210 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 524 event pairs, 66 based on Foata normal form. 1/153 useless extension candidates. Maximal degree in co-relation 162. Up to 109 conditions per place. [2023-11-17 12:01:21,244 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 26 selfloop transitions, 2 changer transitions 16/44 dead transitions. [2023-11-17 12:01:21,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 44 transitions, 200 flow [2023-11-17 12:01:21,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:01:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:01:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2023-11-17 12:01:21,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-11-17 12:01:21,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 57 transitions. [2023-11-17 12:01:21,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 57 transitions. [2023-11-17 12:01:21,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:21,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 57 transitions. [2023-11-17 12:01:21,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,272 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 62 flow. Second operand 4 states and 57 transitions. [2023-11-17 12:01:21,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 44 transitions, 200 flow [2023-11-17 12:01:21,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 44 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:01:21,280 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 68 flow [2023-11-17 12:01:21,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-11-17 12:01:21,286 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-11-17 12:01:21,286 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 68 flow [2023-11-17 12:01:21,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:21,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:21,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:21,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-17 12:01:21,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:21,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1880420682, now seen corresponding path program 1 times [2023-11-17 12:01:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369102401] [2023-11-17 12:01:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:21,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041451862] [2023-11-17 12:01:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:21,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:21,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:01:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:21,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 12:01:21,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:21,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369102401] [2023-11-17 12:01:21,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:21,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041451862] [2023-11-17 12:01:21,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041451862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:01:21,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:01:21,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-17 12:01:21,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658448194] [2023-11-17 12:01:21,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 12:01:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:01:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:01:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:01:21,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:21,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:21,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:21,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:21,878 INFO L124 PetriNetUnfolderBase]: 94/157 cut-off events. [2023-11-17 12:01:21,878 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 12:01:21,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 157 events. 94/157 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 24 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 321. Up to 73 conditions per place. [2023-11-17 12:01:21,880 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-11-17 12:01:21,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 186 flow [2023-11-17 12:01:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:01:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:01:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2023-11-17 12:01:21,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-11-17 12:01:21,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 63 transitions. [2023-11-17 12:01:21,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 63 transitions. [2023-11-17 12:01:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:21,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 63 transitions. [2023-11-17 12:01:21,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,888 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 68 flow. Second operand 7 states and 63 transitions. [2023-11-17 12:01:21,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 186 flow [2023-11-17 12:01:21,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 182 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:01:21,906 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 99 flow [2023-11-17 12:01:21,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2023-11-17 12:01:21,908 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-11-17 12:01:21,908 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 99 flow [2023-11-17 12:01:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:21,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:21,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:21,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:22,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-17 12:01:22,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:22,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash 882861351, now seen corresponding path program 1 times [2023-11-17 12:01:22,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:22,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210097637] [2023-11-17 12:01:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:22,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:22,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481098834] [2023-11-17 12:01:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:22,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:22,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:22,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:22,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:01:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:22,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:01:22,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:22,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:22,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210097637] [2023-11-17 12:01:22,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481098834] [2023-11-17 12:01:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481098834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:22,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:01:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846896021] [2023-11-17 12:01:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:22,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:22,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:22,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:22,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:22,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:22,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:22,461 INFO L124 PetriNetUnfolderBase]: 187/311 cut-off events. [2023-11-17 12:01:22,462 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 12:01:22,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 311 events. 187/311 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 853 event pairs, 102 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 748. Up to 158 conditions per place. [2023-11-17 12:01:22,468 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 27 selfloop transitions, 3 changer transitions 25/55 dead transitions. [2023-11-17 12:01:22,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 298 flow [2023-11-17 12:01:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2023-11-17 12:01:22,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2023-11-17 12:01:22,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 64 transitions. [2023-11-17 12:01:22,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 64 transitions. [2023-11-17 12:01:22,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:22,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 64 transitions. [2023-11-17 12:01:22,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,474 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,475 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 99 flow. Second operand 5 states and 64 transitions. [2023-11-17 12:01:22,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 298 flow [2023-11-17 12:01:22,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:01:22,479 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2023-11-17 12:01:22,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-17 12:01:22,481 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-11-17 12:01:22,481 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2023-11-17 12:01:22,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:22,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:22,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:22,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:22,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:22,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash -668660924, now seen corresponding path program 1 times [2023-11-17 12:01:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706267739] [2023-11-17 12:01:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:22,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:22,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422722713] [2023-11-17 12:01:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:22,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:22,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:22,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:01:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:22,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:01:22,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:22,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706267739] [2023-11-17 12:01:22,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422722713] [2023-11-17 12:01:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422722713] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:22,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:22,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-17 12:01:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344635512] [2023-11-17 12:01:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:01:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:01:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:01:22,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:22,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:22,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:22,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:22,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:23,040 INFO L124 PetriNetUnfolderBase]: 118/203 cut-off events. [2023-11-17 12:01:23,041 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-17 12:01:23,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 203 events. 118/203 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 450 event pairs, 51 based on Foata normal form. 16/199 useless extension candidates. Maximal degree in co-relation 509. Up to 160 conditions per place. [2023-11-17 12:01:23,042 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-11-17 12:01:23,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 247 flow [2023-11-17 12:01:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2023-11-17 12:01:23,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2023-11-17 12:01:23,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 54 transitions. [2023-11-17 12:01:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 54 transitions. [2023-11-17 12:01:23,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:23,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 54 transitions. [2023-11-17 12:01:23,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,046 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 54 transitions. [2023-11-17 12:01:23,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 247 flow [2023-11-17 12:01:23,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 232 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 12:01:23,048 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 166 flow [2023-11-17 12:01:23,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-17 12:01:23,049 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-11-17 12:01:23,049 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 166 flow [2023-11-17 12:01:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:23,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:23,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:23,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:23,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash -139315814, now seen corresponding path program 1 times [2023-11-17 12:01:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756412671] [2023-11-17 12:01:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:23,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:23,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183803678] [2023-11-17 12:01:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:23,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:23,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:23,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:23,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:01:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:23,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 12:01:23,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:01:23,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756412671] [2023-11-17 12:01:23,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183803678] [2023-11-17 12:01:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183803678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:23,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:01:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767101214] [2023-11-17 12:01:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:01:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:01:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:01:23,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:23,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:23,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:23,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:23,807 INFO L124 PetriNetUnfolderBase]: 118/204 cut-off events. [2023-11-17 12:01:23,807 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-17 12:01:23,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 204 events. 118/204 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 448 event pairs, 69 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 550. Up to 198 conditions per place. [2023-11-17 12:01:23,809 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 2 changer transitions 6/38 dead transitions. [2023-11-17 12:01:23,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 253 flow [2023-11-17 12:01:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:01:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:01:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 54 transitions. [2023-11-17 12:01:23,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2023-11-17 12:01:23,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 54 transitions. [2023-11-17 12:01:23,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 54 transitions. [2023-11-17 12:01:23,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:23,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 54 transitions. [2023-11-17 12:01:23,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,813 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 166 flow. Second operand 7 states and 54 transitions. [2023-11-17 12:01:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 253 flow [2023-11-17 12:01:23,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 247 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:01:23,815 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 148 flow [2023-11-17 12:01:23,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-11-17 12:01:23,816 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 22 predicate places. [2023-11-17 12:01:23,816 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 148 flow [2023-11-17 12:01:23,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:23,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:23,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:23,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:24,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:24,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:24,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash -640798133, now seen corresponding path program 1 times [2023-11-17 12:01:24,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:24,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773765647] [2023-11-17 12:01:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:24,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152618547] [2023-11-17 12:01:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:24,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:24,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 12:01:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:24,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:01:24,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:01:24,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:01:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773765647] [2023-11-17 12:01:24,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152618547] [2023-11-17 12:01:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152618547] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:24,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-17 12:01:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510464250] [2023-11-17 12:01:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:01:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:01:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:01:24,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:24,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:24,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:24,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:24,357 INFO L124 PetriNetUnfolderBase]: 116/199 cut-off events. [2023-11-17 12:01:24,357 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-17 12:01:24,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 199 events. 116/199 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 435 event pairs, 69 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 542. Up to 197 conditions per place. [2023-11-17 12:01:24,359 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 29 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-17 12:01:24,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 218 flow [2023-11-17 12:01:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2023-11-17 12:01:24,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2866666666666667 [2023-11-17 12:01:24,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 43 transitions. [2023-11-17 12:01:24,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 43 transitions. [2023-11-17 12:01:24,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:24,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 43 transitions. [2023-11-17 12:01:24,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,362 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 148 flow. Second operand 5 states and 43 transitions. [2023-11-17 12:01:24,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 218 flow [2023-11-17 12:01:24,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 198 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 12:01:24,364 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 146 flow [2023-11-17 12:01:24,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-17 12:01:24,364 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2023-11-17 12:01:24,365 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 146 flow [2023-11-17 12:01:24,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:24,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:24,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:24,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:24,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:24,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash -622235301, now seen corresponding path program 1 times [2023-11-17 12:01:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:24,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160345684] [2023-11-17 12:01:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:24,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27343320] [2023-11-17 12:01:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:24,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:24,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:24,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:24,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 12:01:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:24,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:01:24,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:01:24,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:01:24,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:24,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160345684] [2023-11-17 12:01:24,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 12:01:24,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27343320] [2023-11-17 12:01:24,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27343320] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:24,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:24,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-17 12:01:24,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064767301] [2023-11-17 12:01:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:24,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:01:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:01:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:01:24,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2023-11-17 12:01:24,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:24,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2023-11-17 12:01:24,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:24,912 INFO L124 PetriNetUnfolderBase]: 146/247 cut-off events. [2023-11-17 12:01:24,912 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-17 12:01:24,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 247 events. 146/247 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 631 event pairs, 69 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 660. Up to 198 conditions per place. [2023-11-17 12:01:24,914 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-11-17 12:01:24,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 289 flow [2023-11-17 12:01:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2023-11-17 12:01:24,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2023-11-17 12:01:24,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 51 transitions. [2023-11-17 12:01:24,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 51 transitions. [2023-11-17 12:01:24,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:24,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 51 transitions. [2023-11-17 12:01:24,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,918 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 146 flow. Second operand 5 states and 51 transitions. [2023-11-17 12:01:24,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 289 flow [2023-11-17 12:01:24,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 284 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:01:24,920 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 157 flow [2023-11-17 12:01:24,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-11-17 12:01:24,920 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-11-17 12:01:24,920 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 157 flow [2023-11-17 12:01:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:24,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:24,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:24,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:25,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:01:25,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:25,125 INFO L85 PathProgramCache]: Analyzing trace with hash -954803440, now seen corresponding path program 1 times [2023-11-17 12:01:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:25,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557538925] [2023-11-17 12:01:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:25,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 12:01:25,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866133549] [2023-11-17 12:01:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:25,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:25,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:25,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 12:01:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:25,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-17 12:01:25,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:25,423 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-17 12:01:25,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 27 [2023-11-17 12:01:25,519 INFO L349 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-11-17 12:01:25,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 45 [2023-11-17 12:01:25,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:01:25,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:01:25,717 INFO L349 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-11-17 12:01:25,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 32 treesize of output 53 [2023-11-17 12:01:25,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:01:25,862 INFO L349 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-11-17 12:01:25,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 39 [2023-11-17 12:01:25,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:26,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:01:26,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:26,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:26,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2023-11-17 12:01:26,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-17 12:01:26,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 30 [2023-11-17 12:01:26,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 12:01:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:01:26,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 30 [2023-11-17 12:01:26,768 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-17 12:01:26,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 73 [2023-11-17 12:01:26,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-17 12:01:26,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 40 [2023-11-17 12:01:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:27,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:27,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:27,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 290 [2023-11-17 12:01:27,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2023-11-17 12:01:54,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:54,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 3450 treesize of output 2839 [2023-11-17 12:07:13,397 WARN L293 SmtUtils]: Spent 5.30m on a formula simplification. DAG size of input: 129 DAG size of output: 125 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:13,397 INFO L349 Elim1Store]: treesize reduction 8, result has 96.4 percent of original size [2023-11-17 12:07:13,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 67454015 treesize of output 66049735 [2023-11-17 12:07:24,142 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:24,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:07:24,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152854 treesize of output 151151 [2023-11-17 12:07:30,483 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:30,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:07:30,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151142 treesize of output 150295 [2023-11-17 12:07:30,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150286 treesize of output 148942 [2023-11-17 12:07:37,397 WARN L293 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:37,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:07:37,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148942 treesize of output 146359 [2023-11-17 12:07:37,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146350 treesize of output 146302 [2023-11-17 12:07:46,839 WARN L293 SmtUtils]: Spent 8.68s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:46,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:07:46,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146302 treesize of output 146283 [2023-11-17 12:07:53,913 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:07:53,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:07:53,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146274 treesize of output 146227 [2023-11-17 12:07:54,201 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-11-17 12:08:02,789 WARN L293 SmtUtils]: Spent 8.50s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:02,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:02,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146218 treesize of output 146115 [2023-11-17 12:08:03,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146106 treesize of output 146010 [2023-11-17 12:08:10,264 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:10,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:10,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146010 treesize of output 145915 [2023-11-17 12:08:16,456 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:16,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:16,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145906 treesize of output 145707 [2023-11-17 12:08:16,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145698 treesize of output 145650 [2023-11-17 12:08:24,220 WARN L293 SmtUtils]: Spent 6.96s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:24,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145650 treesize of output 145547 [2023-11-17 12:08:31,395 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:31,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:31,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145538 treesize of output 145519 [2023-11-17 12:08:31,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145510 treesize of output 145462 [2023-11-17 12:08:37,725 WARN L293 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:37,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:37,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145462 treesize of output 145415 [2023-11-17 12:08:43,636 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:43,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:43,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145406 treesize of output 145303 [2023-11-17 12:08:43,951 INFO L209 tifierPushTermWalker]: Run 20 iterations without descend maybe there is a nontermination bug. [2023-11-17 12:08:52,315 WARN L293 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:52,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:52,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145294 treesize of output 145275 [2023-11-17 12:08:58,094 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:08:58,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:58,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145266 treesize of output 145223 [2023-11-17 12:09:08,777 WARN L293 SmtUtils]: Spent 10.21s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:09:08,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:09:08,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145214 treesize of output 145167 [2023-11-17 12:09:09,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145158 treesize of output 145110 [2023-11-17 12:09:14,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:09:14,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145110 treesize of output 145063 [2023-11-17 12:09:20,301 WARN L293 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:09:20,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:09:20,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145054 treesize of output 145035 [2023-11-17 12:09:28,487 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 12:09:28,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:09:28,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145026 treesize of output 144923 Received shutdown request... [2023-11-17 12:10:43,819 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:10:43,825 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 12:10:43,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 12:10:43,863 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:10:44,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-17 12:10:44,037 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-60-3-4-3-3-3-3-3-3-3-2-2-2-2-1 context. [2023-11-17 12:10:44,038 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 12:10:44,039 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 12:10:44,039 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:44,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:10:44,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:10:44,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:10:44 BasicIcfg [2023-11-17 12:10:44,045 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:10:44,046 INFO L158 Benchmark]: Toolchain (without parser) took 567211.11ms. Allocated memory was 271.6MB in the beginning and 601.9MB in the end (delta: 330.3MB). Free memory was 220.1MB in the beginning and 325.4MB in the end (delta: -105.3MB). Peak memory consumption was 363.8MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,046 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:10:44,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.17ms. Allocated memory is still 271.6MB. Free memory was 220.1MB in the beginning and 208.0MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.65ms. Allocated memory is still 271.6MB. Free memory was 208.0MB in the beginning and 205.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,047 INFO L158 Benchmark]: Boogie Preprocessor took 43.76ms. Allocated memory is still 271.6MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,047 INFO L158 Benchmark]: RCFGBuilder took 1023.94ms. Allocated memory is still 271.6MB. Free memory was 203.8MB in the beginning and 230.4MB in the end (delta: -26.6MB). Peak memory consumption was 81.4MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,047 INFO L158 Benchmark]: TraceAbstraction took 565835.18ms. Allocated memory was 271.6MB in the beginning and 601.9MB in the end (delta: 330.3MB). Free memory was 229.3MB in the beginning and 325.4MB in the end (delta: -96.0MB). Peak memory consumption was 372.6MB. Max. memory is 8.0GB. [2023-11-17 12:10:44,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.17ms. Allocated memory is still 271.6MB. Free memory was 220.1MB in the beginning and 208.0MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.65ms. Allocated memory is still 271.6MB. Free memory was 208.0MB in the beginning and 205.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.76ms. Allocated memory is still 271.6MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1023.94ms. Allocated memory is still 271.6MB. Free memory was 203.8MB in the beginning and 230.4MB in the end (delta: -26.6MB). Peak memory consumption was 81.4MB. Max. memory is 8.0GB. * TraceAbstraction took 565835.18ms. Allocated memory was 271.6MB in the beginning and 601.9MB in the end (delta: 330.3MB). Free memory was 229.3MB in the beginning and 325.4MB in the end (delta: -96.0MB). Peak memory consumption was 372.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 26 PlacesBefore, 25 PlacesAfterwards, 26 TransitionsBefore, 25 TransitionsAfterwards, 78 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 76 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2179, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 2171, unknown conditional: 0, unknown unconditional: 2171] ], Cache Queries: [ total: 60, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-60-3-4-3-3-3-3-3-3-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-60-3-4-3-3-3-3-3-3-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-60-3-4-3-3-3-3-3-3-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 565.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 579 IncrementalHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 579 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 219 ConstructedInterpolants, 1 QuantifiedInterpolants, 536 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1988 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 31/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown